I didn't know about the Shock Collars!!! LOL!! I have shot Rocky Mtn. Snypers for years - before they ever made a Rage. Rage bought the design, from what I understand, from Rocky Mtn and started producing Rages. The difference between the Snypers and Rages is Rage has the o-ring that holds the blades in place around the bottom of the blades, while the Snyper has notches toward the top of the blades that a rubber band fits in.
I simply took a Rage and converted it to a Snyper. I cut little notches for the rubber band to fit in and eliminated the o-ring around the bottom. I believe it will work just fine, but I will certainly shoot them to make sure.
The reason I didn't like the O-ring at the bottom,
1. Too easy to bump and have blades "pop" out of o-ring.
2. It seemed to be it would be too difficult to get them back in place in a hunting situation.
We will see how it works, but as I said, they are almost identical now to the Snypers I have shot for years.